Is Yantai seriously polluted?

The historical average air index of Yantai in recent 30 days is 55, with excellent air quality 17 days, good air quality 10 days, light pollution for 3 days and moderate pollution 1 day. In recent 30 days, the air quality is mostly fine weather, which is suitable for outdoor sports and life. Statistics are general and are for reference only. According to relevant public information, the historical average air index of Yantai in recent 30 days is 55, with excellent air quality days 17 days, good air quality days 10 days, light pollution days for 3 days and moderate pollution days 1 day. Most of the air quality in recent 30 days is excellent weather, which is suitable for outdoor sports and life. The statistics are average and are for reference only.